Door-check



(Nb Model.)

J.- DREES. DOOR 011301;.

Patented Mar.31,1 891. v

ATTORNEY UNITED STATES PATENT OFFICE.

JOHN DREES, OF LITTLE ROCK, ARKANSAS.

DOOR-CHECK.

SPECIFICATION forming part of Letters Patent No. 449,618, dated March 31, 1891.

Application filed April 10, 1890. Serial No. 847,412. (No model.)

To all whom it may concern.-

Be it known that I, JOHN DREES, a citizen of the United States, residing at Little Rock, in the county of Pulaski and State of Arkansas, have invented certain new and useful Improv'ernents in Automatic Door-Stops; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the letters of reference marked thereon, which form a part of this specification.

My invention has relation to automatic door-checks; and it consists in the novel construction and arrangement of its parts.

In the accompanying drawings, Figure 1 is a perspective View of my door-check attached to a door, the crescent-lever B and knob to being left off, the better to show the arrangement of the bolt a and the plate A. Figs. 2, 3, and 4: are detail views partly in section.

'My invention is described as follows:

I make a plate A, having in its upper end a slot a,large enough to fit over the door-bolt a and long enough to allow said plate to move up and down. Said plate has turned outwardly on its upper end a flange a and on its lower end a perforated flange a On the upper part of the spindle a of the door-knob is cuta depression in which is fitted and secured a crescent-lever B, the upturned ends of which rest against the lower face of the flange a. To the lower end of the said plate A and passing through the perforation in said flange a is a thread-rod O and secured in place, and is made adjustable by the upper and lower jam-nuts c and c. To the lower end of said rod is secured abolt D, provided with the upper cup (I and the lower cup (1. The inner face of the said cup d is provided with a screw-t1] read (1 and into said cup d is screwed a rubber plug (1 the lower end of which projects below the lower end of said cup. Said bolt and plug move up and down in a cylinder E, the upper end of which is covered by a perforated cap e, the rod G working up and down through the perforation in the same. On the inside of the said cylinder and in its upper end is secured a spiral spring F, the upper end of which rests against the inner face of the cap 6, while its lower end fits in the cup d. Said cup is made sufliciently deep to prevent the spring from getting out of p051- tion.

The exact size and shape of my invention and of its various parts are immaterial so long as the principles are adhered to.

My invention is designed to hold the door open or partly open at any angle desired, the lower end of the adjustable rubber plug d resting against the floor or carpet, and thus holding the door in the position set. The said rubber is pressed down against the floor by 6; means of the spiral spring F. If for any reason the said rubber plug should become a little too short from wear or the sagging of the parts of the house or door, the whole bolt D may be let down by means of the jam-nuts c and c, or said rubber plug may be let down by screwing it out of its cup (1 a little, or if too long it may be screwed in a little.

lVhen I wish to move the door, I first turn the knob a either to the right or left, which motion throws upward either the right or left horn of the crescent-lever B, which in turn presses against the lower face of the flange a and moves the plate A upward, and consequently rod 0, bolt D, and rubber plug d and then when the door is in the position desired I release the knob, and the spring F 1mmediately presses the said rubber plug down against the floor.

This invention may be attached to any suitable door-knob and spindle used on a door, or a separate spindle and knob may be provided and secured to the door just below the one in use.

Having described my invention, what I 0 claim as new, and desire to secure by Letters Patent, is-- 1. In combination with a door-knob and spindle, the plate A, having a slot a, upper flange a and lower perforated flange a", cres- 5 centJever B, secured to the spindle of the knob a its ends resting against the lower face of the flange a, rod 0, its upper end secured in the flange a and bolt D, working in cylinder E, substantially as shown and de- I00 scribed.

2. In a door-check, the combination of the bolt D, having the cups cl (1' and rod 0, ad-

justable rubber plug d screwing into Said cup 1!, spiral spring F, working in cup (I and against cup e, cylinder E, secured to a door and incasing said parts, said bolt operated by asuitable plate A and lever B, substantially as shown and described, and for the purposes set forth.

In a door-cheek, the combination of the plate A, having a slot a, upper flange a", and lower perforated flange (0, crescent-lever B, secured to the spindle of a knob a rod 0, its upper end secured in the flange a and its lower end to the bolt l), and bolt D, incased in the cylinder E and provided with the spi ral spring F and adjustable rubber plug cl", substantially as shown and deseribed,and for I 5 the purposes set forth. In testimony whereofl aifix in y signature in presence of two witnesses.

JOHN DREES. \Vitnesses:

XVM. H. FULLERTON, M. D. LATTIN. 

